Second and Third Row Map Lights not working

2016 xc90 with an interior light problem. Cannot figure this out. The map lights in the front part of the cabin and all other courtesy lights work fine. The map lights over the second and third row do not come on. No matter what I try. The lights on the tailback and rear work as well. Any ideas?

Some additional information:
I had not realized that the sunvisor lights also were not working. I tracked down the fuse responsible for these lights - #28 in the passenger compartment. However, the fuse will blow immediately upon replacement.